I Knew About Gravity. But I Hadn't Thought About the Equation Behind It This Way

The author reexamines familiar gravity formulas to understand what they imply about reality.

Newton's inverse-square law follows from how influences spread over a sphere in three-dimensional space.

Einstein's field equation links spacetime geometry to the distribution of energy and matter.

Free-fall objects follow geodesics in curved spacetime rather than experiencing a force in their own frame.